[FFmpeg-trac] #1578(undetermined:open): variable FPS incorrect frame length

[FFmpeg]

#1578: variable FPS incorrect frame length
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             Reporter:  kubabrecka   |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  fps          |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  1
-------------------------------------+-------------------------------------

Comment (by er.anshul.maheshwari@…):

 git have same calculation
 but adding break in below code does not have frame loss

 {{{
     switch (format_video_sync) {
     case VSYNC_VSCFR:
         if (ost->frame_number == 0 && delta - duration >= 0.5) {
             av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial
 frames\n", (int)lrintf(delta - duration));
             delta = duration;
             ost->sync_opts = lrint(sync_ipts);
         }
     case VSYNC_CFR:
         // FIXME set to 0.5 after we fix some dts/pts bugs like in
 avidec.c
         if (delta < -1.1)
             nb_frames = 0;
         else if (delta > 1.1)
             nb_frames = lrintf(delta);
         break;

 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/1578#comment:10>
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